EP1406315A3 - LED - display with an enhanced light extraction efficiency - Google Patents

LED - display with an enhanced light extraction efficiency Download PDF

Info

Publication number
EP1406315A3
EP1406315A3 EP03022173A EP03022173A EP1406315A3 EP 1406315 A3 EP1406315 A3 EP 1406315A3 EP 03022173 A EP03022173 A EP 03022173A EP 03022173 A EP03022173 A EP 03022173A EP 1406315 A3 EP1406315 A3 EP 1406315A3
Authority
EP
European Patent Office
Prior art keywords
light
end portion
optical distance
emitting
extraction efficiency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03022173A
Other languages
German (de)
French (fr)
Other versions
EP1406315A2 (en
Inventor
Jiro Yamada
Nobutoshi Asai
Shinichiro Tamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of EP1406315A2 publication Critical patent/EP1406315A2/en
Publication of EP1406315A3 publication Critical patent/EP1406315A3/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/876—Arrangements for extracting light from the devices comprising a resonant cavity structure, e.g. Bragg reflector pair
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/852—Arrangements for extracting light from the devices comprising a resonant cavity structure, e.g. Bragg reflector pair
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/22—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]

Abstract

Provided are a display device and a display unit having higher light extraction efficiency. An optical distance L1 between a maximum light-emitting position of a light-emitting layer and a first end portion satisfies L1=tL1+a1 and (2tL1)/λ=-Φ1/(2π)+m1. An optical distance L2 between the maximum light-emitting position and a second end portion satisfies L2=tL2+a2 and (2tL2)/ λ = - Φ2/(2 π)+m2. In the formulas, tL1 and tL2 represent a theoretical optical distance between the first end portion and the maximum light-emitting position and a theoretical optical distance between the second end portion and the maximum light-emitting position, respectively, ai and a2 represent correction amounts based upon a light-emitting distribution in the light-emitting layer, λ represents a peak wavelength of the spectrum of light desired to be extracted, Φ1 and Φ2 represent a phase shift of reflected light generated in the first end portion and a phase shift of reflected light generated in the second end portion, respectively, and each of mi and m2 is 0 or an integer.
EP03022173A 2002-10-04 2003-09-30 LED - display with an enhanced light extraction efficiency Withdrawn EP1406315A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002292082A JP3703028B2 (en) 2002-10-04 2002-10-04 Display element and display device using the same
JP2002292082 2002-10-04

Publications (2)

Publication Number Publication Date
EP1406315A2 EP1406315A2 (en) 2004-04-07
EP1406315A3 true EP1406315A3 (en) 2005-11-09

Family

ID=31987205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03022173A Withdrawn EP1406315A3 (en) 2002-10-04 2003-09-30 LED - display with an enhanced light extraction efficiency

Country Status (7)

Country Link
US (2) US7224114B2 (en)
EP (1) EP1406315A3 (en)
JP (1) JP3703028B2 (en)
KR (1) KR100948442B1 (en)
CN (1) CN100361311C (en)
SG (1) SG120115A1 (en)
TW (1) TWI226207B (en)

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JP4598136B1 (en) 2009-07-31 2010-12-15 富士フイルム株式会社 Organic electroluminescent device and manufacturing method thereof
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Also Published As

Publication number Publication date
SG120115A1 (en) 2006-03-28
US20070170852A1 (en) 2007-07-26
US7602117B2 (en) 2009-10-13
CN1523941A (en) 2004-08-25
KR100948442B1 (en) 2010-03-17
US7224114B2 (en) 2007-05-29
JP3703028B2 (en) 2005-10-05
EP1406315A2 (en) 2004-04-07
TW200410585A (en) 2004-06-16
TWI226207B (en) 2005-01-01
US20040145303A1 (en) 2004-07-29
CN100361311C (en) 2008-01-09
KR20040031608A (en) 2004-04-13
JP2004127795A (en) 2004-04-22

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